Datasheet

Electrical characteristics STM32L431xx
152/200 DocID028800 Rev 1
6.3.21 Operational amplifiers characteristics
2. Refer to Table 24: Embedded internal voltage reference.
3. Guaranteed by characterization results.
Table 74. OPAMP characteristics
(1)
Symbol Parameter Conditions Min Typ Max Unit
V
DDA
Analog supply
voltage
(2)
-1.8-3.6V
CMIR
Common mode
input range
-0-V
DDA
V
VI
OFFSET
Input offset
voltage
25 °C, No Load on output. - - ±1.5
mV
All voltage/Temp. - - ±3
VI
OFFSET
Input offset
voltage drift
Normal mode - ±5 -
V/°C
Low-power mode - ±10 -
TRIMOFFSETP
TRIMLPOFFSETP
Offset trim step
at low common
input voltage
(0.1 V
DDA
)
--0.81.1
mV
TRIMOFFSETN
TRIMLPOFFSETN
Offset trim step
at high common
input voltage
(0.9 V
DDA
)
--11.35
I
LOAD
Drive current
Normal mode
V
DDA
2 V
- - 500
µA
Low-power mode - - 100
I
LOAD_PGA
Drive current in
PGA mode
Normal mode
V
DDA
2 V
- - 450
Low-power mode - - 50
R
LOAD
Resistive load
(connected to
VSSA or to
VDDA)
Normal mode
V
DDA
< 2 V
4--
k
Low-power mode 20 - -
R
LOAD_PGA
Resistive load
in PGA mode
(connected to
VSSA or to
V
DDA
)
Normal mode
V
DDA
< 2 V
4.5 - -
Low-power mode 40 - -
C
LOAD
Capacitive load - - - 50 pF
CMRR
Common mode
rejection ratio
Normal mode - -85 -
dB
Low-power mode - -90 -
PSRR
Power supply
rejection ratio
Normal mode
C
LOAD
50 pf,
R
LOAD
4 k DC
70 85 -
dB
Low-power mode
C
LOAD
50 pf,
R
LOAD
20 k DC
72 90 -
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